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I am learning Scala and I am stuck at hello world script. My hello.scala is: Console.println("Hello World") I am running the script like this: scala hello.scala I get a weird exception: java.net.UnknownHostException: salil: salil: Name or service not known at java.net.InetAddress.getLocalHost(InetAddress.java:1438) at scala.tools.nsc.io.Socket$.localhost(Socket.scala:38) at scala.tools.nsc.CompileSocket.getsock$1(CompileSocket.scala:169) at scala.tools.nsc.CompileSocket.getOrCreateSocket(CompileSocket.scala:184) at scala.tools.nsc.ScriptRunner.compileWithDaemon(ScriptRunner.scala:80) at scala.tools.nsc.ScriptRunner.compile$1(ScriptRunner.scala:123) at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply$mcZ$sp(ScriptRunner.scala:157) at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply(ScriptRunner.scala:131) at scala.tools.nsc.ScriptRunner$$anonfun$withCompiledScript$1.apply(ScriptRunner.scala:131) at scala.tools.nsc.util.package$.waitingForThreads(package.scala:26) at scala.tools.nsc.ScriptRunner.withCompiledScript(ScriptRunner.scala:130) at scala.tools.nsc.ScriptRunner.runScript(ScriptRunner.scala:188) at scala.tools.nsc.ScriptRunner.runScriptAndCatch(ScriptRunner.scala:201) at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala my SCALA_HOME is /opt/scala-2.9.1.final and my Path has $SCALA_HOME/bin in it. My JAVA_HOME is: /usr/java/jdk1.7.0 Is this an issue with my settings or is it due to some issue with Scala libraries and JDK1.7?

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